Steam generator



A. E. OELTJEN E1-AL STEAM GENERATOR Filed April 9, v19K-1:0

March 17, 1942.

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Patented Mar. 17, 1942 UNITED sr TES STEAM GENERATOR Alta, E. Oeltjenand Ira W. Ford, Los Angeles,`

Cal y Application April 9, 1940, Serial No. 328,676

2 Claims.

Our invention relates to steam generators and, more particularly, to theflash type with a supply of boiling water and with means for quickly,efciently and economically furnishing a supply of steam for utilizationby hat-blocking, garment-pressing or other type of equipment or device.

An object is to provide a ash-chamber extension that is adjacent aburner, whose function is to convert into steam such water as may failto be converted in the flash chamber.

Another object is to provide, in a ash steam generator, a novel baie,disposed in the path of the incoming hot water to prevent it fromreaching said equipment or device.

Further objects and advantages will become apparent in thisspecification and the accompanying drawing, in which- Figure 1 is avertical, sectional view of one of several possible forms of a generatorembodying my invention;

Figure 2 is an elevation of the same, with a part broken away, taken inthe direction of theV arrow 2 of Figure l.

The numeral I designated a vertical, cylindrical casing having suitableheat insulation (not shown) and being supported by legs II.

Within casing I0 is a flash generator main assembly I2 comprising aspirally disposed coil of tubing I4, the intake end thereof beingconnected to a source of water supply I5. The discharge end of said coilis connected by sub-assembly 45 to a quick-acting valve I6, in turnconnected to needle valve I1 provided with hand control I8, the needleelement being indicated by 32.

Inside of the casing is a flash chamber constituted of a horizontallydisposed, hollow, crosslike member 20; the interior of it beingdesignated by I9; secured to the top thereof, is steamoutlet pipe 2I,controlled by valve 22, the member-adjacent end of said pipe extendingin part into the interior of said member 20 and has secured to it anovel baille member 23, axially aligned with a pipe 24 depending fromsaid member and with pipe I9a providing communication between interiorI9 and valve I1. As can be seen, the baie member consists of a T fittingadapted to receive steam from the flash chamber.

Located centrally within the casing I0, adjacent the lower end of coilI4, is a main burner 21 carried by a branch 28 of a gas supply pipe 29.Also carried by branch 28 is a supplementary burner 30 of the buzzertype, also referred to as a buzzen its open end terminating adjacentburner 21 and adjacent extension tube 25, which as is seen is anextension of pipe 24 and extends downwardly therefrom axially throughAcoil I4 and cross-sectionally is reduced relatively to pipe 24 and isclosed by cap 26. Extension tube 25, because it is adjacent burner 21and its flame 3l is referred to also as a burner-adjacent eXtent0 arm34, is connected to a suitable foot treadle 38, the treadle beingpivotally secured to one of said legs II, as is seen in Figure 2. Aspring 39 secured to arm 35 retains arms 35 and 34 in the position shownin Figure 2, with the aid of stop lug 40.

Theoperation of the device is as follows: The coil I4 is provided withwater therewithin, which by means of heating means or main burner 21 andbuzzer 30 is normally kept at boiling temperature. Valve 45 normally isslightly open to allow a continuous supply of gas to the burners. Whenthe treadle is depressed, valve 45 is fully opened, thereby causing mainburner 21 to burn with a full flame and buzzer 30, normally burning witha low ame, to project a blast of flame extending as far as flashchamberI9, the increased heat supplied by both said burners therebycorresponding to the increased flow of water into coil I4. When treadle38 is depressed, valve I6 is opened, thereby permitting a flow ofcontrolled hot water through Vneedle valve I1 so as to produce steam ofthe desired degree of dryness. The hot water encounters baffle 23, whosetemperature has now been considerably raised by the increased heatsupply, and is converted into steam, which passed into the open ends 23aof T 23 and up, through pipe 2I to the device utilizing the steam. Anywater dropping from flash chamber I9 into extension tube 25 is convertedinto steam because of the burner-adjacent or flame-adjacent dispositionof said extension tube.

From the foregoing it is apparent that We have provided a simple,practical and efficient steam generator for the purposes mentioned.Particularly, has a novel form of baille been provided for preventingwater from entering the device utilizing the steam.

The particular form of our invention shown is merely illustrative and wereserve the right to make numerous changes in the dimensions, forms andrelative dispositions of the various parts within the scope of theappended claims.

We claim- 1. A steam generator comprising: a heating coil; at least twoburners for heating said coil; an expansion chamber disposed over,connected to, and communicating with, said heating coil; an extension ofsaid expansion chamber extending downwardly within said heating coil;one of said burners being located beneath said heating 10 coil andadapted to heat said heating coil, and

the other of said burners being disposed adjacently the lowermost end ofsaid extension and directed toward said heating coil and said expansionchamber and adapted to supply a blast 15 of arne long enough to traversesaid heating coil and terminate at said expansion chamber.

ALTA E. OELTJEN. IRA W. FORD.

